import axios from "axios";
import { ElMessage } from "element-plus"
import 'element-plus/theme-chalk/el-message.css'
import { useUserStore } from "@/stores/userStore.js"
import router from "@/router"

// 创建axios实例
const httpInstance = axios.create({
  baseURL: 'http://pcapi-xiaotuxian-front-devtest.itheima.net', // api的base_url
  timeout: 20000, // 请求超时时间
})

// axios请求拦截器
httpInstance.interceptors.request.use(config => {
  // 1.从pinia获取token数据
  const userStore = useUserStore()
  // 2.按照后端的要求，拼接token数据
  const token = userStore.userInfo.token
  // 3.如果token存在，拼接请求头Authorization
  if (token) {
    config.headers.Authorization = `Bearer ${token}`
  }
  return config
}, e => Promise.reject(e))

// axios响应式拦截器
httpInstance.interceptors.response.use(res => res.data, e => {
  const userStore = useUserStore()
  // 统一错误提示
  ElMessage({
    message: e.response.data.message,
    type: 'warning',
  })

  // 401token失效处理
  if (e.response.status === 401) {
    // 1.清除本地用户数据
    userStore.clearUserInfo() 
    // 2.跳转到登录页面
    router.push('/login')
  }

  return Promise.reject(e)
})

// 统一导出httpInstance实例
export default httpInstance